Firearm.



lthe strain of testing THOMAS C. JOHNSON,

OF NEW HAVEN, CONNECTICUT,` ASSIGNOR TO WIN CHESTER REPEATING ARMS CO., OF NEW HAVEN, CONNECTICUT,

A CORPORATION.

FIREARM. I

Specification of Letters Patent. Application 'lled April 2l, 1906. Serial No. 313,007.

Patented Nov. 13, 1906.

To all whom it may concern.-

Beit known that I, THoMAs'C. JOHNSON, a citizen of the United States, residing at New Haven, in the county of New I-Iaven and State of Connecticut, lhave invented a newl and useful Im rovement in Firearms; and I do hereby deci)are the following, when taken in connection 'withthe accompanying drawings and the gures of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a view in side elevation of a gun frame or receiver provided with my improved exterior crown-like reinforce; Fig. 2, a view thereof in rear elevation; Fig. 3, a view thereof1 in vertical section on the line a, a of Fig. l looking forward; Fig. 4, a view thereof in horizontal section on the line b b looking downward.

. I-Ier'etofore the stretch of the metal due to and firing guns of the class in which the shock of recoil is taken by the innerface 'of the rear wall of the gun frame or receiver has resulted in the roduction of a depression or concave fi let-like band where the relatively thinner top and side walls of the frame merge into the thick rear wall thereof. This concave Jfillet-like band in the otherwise flat polished surface of the gun-frame produces a shadow which disfigures the frame and tends to alarm the user of the gun. To reduce the strain at this point, it has been proposed to thicken the frame on the inside in such a way as to secure a more gradual merger of the thick and thin portions thereof into each other. This does not, however, prevent the stretching of the frame and the consequent appearance upon the smooth polished exterior surfaces thereof of concave fillet-like shadow- Y roducingbands,which are alarming and dis 'guring The object of my present invention is to not only provide a reinforce, but to render the stretch, if it occurs, invisible, and so avoid the disfigurement of the gun and thealarm of its owner.

With these ends in view my invention consists in the construction to be hereinafter described, and pointed out in the claims.

In carrying out my invention as herein shown I form an integral exterior crown-like reinforce 2 upon the rear upper corner of the gun frame or receiver between the relatively thin top 3 and side walls i and the relatively I thick rear wall 5 thereof and shape it so as to merge into the said top walls 8 and side Walls 4 upon gradually-tapering curved lines. The general contour of this reinforce may be said to be convex. N ow when the thrust of recoil is taken by the inner face of the thick rear wall 5 the said crown-like reinforce 2 will absorb and diffuse the shock and prevent the rupture of the metal of the un-frame at the merger of the thick and t in portions thereof and also prevent, at least in most cases, the stretching of the metal; but in case the metal does stretch the resulting change of form, whatever it may be, Will be so lost in the curved surfaces of my improved reinforce that it will not be visible to the eye, whereby the disiigurement of the frame is avoided. like shadow-producing band should be produced in the gun-frame by the stretching thereof it will be so neutralized by the curved lines of the exterior reinforce that it will not show and will not produce the alarming and disiiguring shadows characteristic of In other words, if a concave iilletstretch in guns having polished fiat exterior surfaces. With my improved crown-like reinforce a gun may be adapted to very much heavier charges with perfect safety and without substantially increasing its weight.

. The thickness of the reinforce will depend upon a variety of factors, such as the size of the gun, the character of its construction, and the charges which` it is designed to sustain. In case it is found desirable to have a high reinforce it will be necessary to form a sight-opening 6 -in its apex. In case the reinforce is not formed with this opening the front sight may be raised to 'correspond to the height ofthe reinforce.

I claim- 1. A gun frame or receiver having an integral exterior crown-like reinforce located at its upper rear corner and increasing the body of metal between the relatively thin top and side walls of the frame and the thick rear wall thereof upon the inner face of which the shock of recoil is taken.

2. A gun frame or receiver having an integral exterior crown-like reinforce located at itsupper rear corner and increasing the body of metal between Lthefreletively thin top ,endg sgecifieation in-:the presence'of two s ubsorb; side Wallsfof the-frame and the-,thickrearA ing Witnesses. Wall. thereof upon the inner face of-Which thevshook of; recoil isV teken, the`l said reinl, THOMAS" C' JOHNSON 5 forge .beinggfoimed 1in:x its apex Withla cgentralg Witnesses.:

opening forming a rear sight for the gun. ARTHUR W. EARLE,l I

In testimony whereof I have signed this l HERBERT F. BEEBE. 

